Patents by Inventor Charles L. Terry

Charles L. Terry has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Methods of removing undesired ions from aqueous solutions
    Patent number: 5158687
    Abstract: A method of removing undesired ions, such as chlorine, hypochlorite, chromium, cyanide and heavy metal ions, from an aqueous preparation containing one or more of said ions consists of adding to the aqueous preparation an effective amount of magnesium bisulfite to inactivate the undesired ions and then adjusting the pH of the mixture to an appropriate pH. Compositions containing magnesium bisulfite and divalent and trivalent ions are disclosed.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: October 27, 1992
    Assignee: Hydrite Chemical Co.
    Inventors: Charles L. Terry, Leo F. Bohanon, Scott S. Roth